Lifting jack



A. PETELER May 27, 1930;

LIFTING JACK Filed Sept. 18, 1924 Patented May 27, 1930 "rates ADOLII-IPETELER, 01? FREE-PORT, NEW YORK, ASSIGNQR T AUTO SPECIALTIES MANU-FACTURING CC). 01? SAN FRANCISCO, CALIFORNIA, A CORPORATION 01CALIFORNIA LIZETING JACK Application filed September 18, 1924'. SerialNo. 738,362.

This invention relates to lifting means such as the jacks for liftingthe axlesof vehicles and similar applications wherein de vices of thischaracter would be useful.

The main object of the invention is to provide a lifting ackwherein thelifting movement shall be multiplied for a given movement of theoperating means so that a large lift may be easily and effectivelyaccomplished. This is especially useful in connection with a handoperated jack for lifting the ture of energy or time.

axle of a vehicle on which balloon tires are used in that this userequires a relatively large lift and, being usually operated by hand, itshould be operable without undue expendi- It is obvious, however, thatthis is merely one of the applications in which the invention will proveuseful.

A further object of the invention is to provide a device of thecharacter as indicated wherein the parts are not secured in rigidrelationship but are floating, that is capable of mutual adjustment toadapt themselves to l the conditions of use encountered.

Other and ancillary objects of the invention will appear hereinafter.

In the accompanying drawings which illustrate the invention:

Fig. 1 is a side elevation partly in vertical axial section of a jack,in collapsed position. embodying the invention Fig. 2 is a view partlyin top plan partly in transverse section as viewed on the line 22 ofFig. 1;

Fig.8 is a side elevation on a reduced scale of the jack showing theparts in extended po sition; and j V Fig. 4 is a fragmentary viewshowing the relationship of parts as will be hereinafter referred to.

Referring to the drawings the device comprises a pedestal having a base1 and a cylindrical sleeve 2 which may be integrally formed by casting.The interior of the sleeve 2 formed with screw threads 3 with whichengage suitable threads on a. nut or collar 4. Resting upon the nut 4 isthe end of a second sleeve 5 having its exterior a smooth cylindricalsurface permitting it to slide longi tudinally or turn within the sleeve2. The sleeve 5 also has screw-threads 6 upon its interior and asuitablytln'eaded nut or collar 7 engages in the threads 6. Upon the nut7 rests the end of a cylinder 8 telescoping within the sleeve 5. Attheupper end of the cylinder 8 is the cap 9 for engagement with the axleor other object to be lifted, which cap may be mounted upon ballbearings as shown, and is rotatable so as to readily adjust itself tothe conditions of the body acted upon. i

As the nuts 4: and 7 are turned in one direction the nut a will rise inrelation to the sleeve 2 andpush the sleeve 5 upward ahead of it, whilethe nut 7 will rise with relation to the sleeve 5, pushing the cylinder8 11p ahead of it.

To turn the nuts 4 and 7 a central hexagonal shaft is provided. Ahexoganal sleeve 11, for a purpose as will be hereinafter referred to isfitted about the shaft 10 but telescopically slidable thereon. The shaft10 passes through a hexagonal opening in the nut 4 while the shaft andsleeve pass through a. similar opening in the nut 7 so that the nutsturn with the shaft and sleeve but may slide longitudinally thereof. Theshaft is turned by a bevel gear 12 fitting its hexagonal form at itslower end. The gear 12 is turned by a bevel gear 13 fixed to a shaft 1+1journalled in the sleeve 2 and base 1 of the pedestal and extending tothe outside of the base where it is provided with a squared end or othersuitable conformation for engagement with a wrench or other suitabletool for turning it.

It will be apparent that upon turning the shaft 10 the nut 4; will risein the sleeve 2 and with it the sleeve 5, while the nut 7 and with itthe cylinder will rise with rela tionto the sleeve 5 so that for a givenmovement of the shaft 14: the can 9 will have a movement equal to thesum of the movements of the sleeves 5 and 8. It is desirable howeverthat the turning shall not be continued to cause the lifting members ofthe jack to move out of proper relationship to each other but thatlimiting means for the turning be pro-- vided. To this end a tongue 15is formed at the lower end of the sleeve 5, which tongue extends into akeyway 15 in the sleeve 2 of the pedestal, this keyway extending to asufficient length to permit the desired movement of the sleeve 5 but theupward movement of the sleeve is limited by the tongue 15 coming againstthe shoulder 16 on the pedestal at the end of the keyway. It istherefore impossible to turn the shaft 14: to such an extent as to forcethe sleeve 5 out of the top of the pedestal. The stopping of the sleeve5 prevents further turning of the nut and therefore locks the shaft 10so that further lifting of the nut 7 and sleeve 8 is prevented.

It is not only desirable that it shall not be possible to unduly operatethe lifting mem-- bers upwardly so that they will become di associatedas just referred to, but it is also desirable that be not possible topull them apart or that they fall apart when in positions other than thevertical. We have already seen that the sleeve 5 cannot leave thepedestal because of the tongue 15. To prevent the sleeve 8 from leavingthe sleeve 5 is the purpose of the sleeve 11 and its arrange-- ment aswill now be referred to.

Starting from the collapsed. position as shown in Fig, 1, asthe jack israised, the nut 4 carries with it the sleeve 11 and as the nut 7 movesupwardly with relation to them, and lifts the member 8 with it, itslides upon the sleeve 11 as does also the ring 17 which is a springring, sprung into a groove upon the interior of the sleeve 8 in a mannerwell understood by those skilled in the art. When the ring 17 reachesthe upper end of the sleeve 11 it engages its outwardly flared end 18and carri es the sleeve with it thereafter, the sleeve sliding upon theshaft 10. This upward movement of the sleeve 11 with relation to theshaft 10 is limited by a tongue 19 on the sleeve peened inwardly at itsbottom and sliding along a flat face 20 on the shaft 10 and formed byflattening one of its angles. The upward movement of the sleeve islimited by this tongue coming against the shoulder 21 on the shaft 10 atthe upper end of the flat face. In order that the sleeve 11 may becertainly carried down into'the collapsed position of the ack, anoutwardly projecting tongue 22 on the sleeve is engaged by thenut 7 inits downward course.

It will be seen from the foregoing that the desired multiplication oflifting is accomplished and at the same time the members are floatingwith relation to each other instead of being secured together so thatthey may adjust themselves to the conditions of lifting encountered andalso the members may be pulled outwardly by grasping the cap of the ackso that the parts may be extended for purposes of inspection, cleaningor other purposes and at the same time means is provided for preventingthe pulling apart or dissociation of the parts.

While the invention has been illustrated in what is considered its bestapplications it may have other embodiments without departing from itsspirit and is not therefore limited to the structures shown in thedrawings.

What I claim is:

1. A lifting jack comprising a pedestal, a lifting member adapted to beprojected from said pedestal, an actuating member for said liftingmember, a second lifting member adapted to be projected with respect tosaid first lifting member, an actuating member for said second liftingmember and driving means common to said actuating members arranged insaid pedestal and effective to project said first lifting member withrespect to said pedestal and said second lifting member with respect tosaid first lifting member.

2. n lifting jack comprising a plurality of telescoping tubular members,means in one n'ieinber engaging therewith and adapted to be forcedtherealong by relative turning, said means engaging another of saidmembers to slide it with relation to the other member and a telescopingcentral shaft engaging said me ns to turn it but such engagementpermitting sliding of said means with relation to said shaft and meansfor turning said shaft.

3. A lifting jack comprising a plurality of telescoping tubular members,means in a plurality of said members respectively each enwith itsrespective member and adapted to be forced therealong by relativeturning, said means engaging another of said members to slide it withrelation to the other member and a telescoping central shaft com mon toall of said means and engaging there with to turn them, but suchengagement permitting sliding of said means with relation to said shaftand means for turning the said shaft.

4. A lifting jack comprising a plurality of telescoping tubular members,certain of said tubular members bein interiorl y thread ed, :1 pluralityof nuts engaging with the said threads upon the interiors of their respective members, each of said nuts being adapted to engage another ofsaid members and slide it with relation to the member with which the nutis in screw-threaded engagement, a telescoping central shaft engagingwith said nuts to cause turning thereof with said shaft but permittingsliding of said nuts along said shaft and means for turning said shaft.

5. A lifting jack comprising a plurality of telescoping tubular members.certain of tubular members being interiorly threaded, a plurality ofnuts engaging with the said threads upon the interiors of theirrespective i'ncmbers, each of said nuts being adapted to engage anotherof said members and slide it with relation to the member with which thenut is in screw-threaded engagement, a

central shaft engaging with said nuts to cause turning thereof with saidshaft but permits ting sliding of said nuts along said, shaft and meansfor turning said shaft and centrally located telescoping means forpreventing dissociation of said members.

6. A lifting jack in combination with a casing comprising a base and aninteriorly screw-threaded sleeve, a nut engaging with the interior ofsaid sleeve, a second sleeve sliding within the first mentioned sleeve,said second sleeve being interiorly screw-threaded, a second nutengaging with the screw threads upon said second sleeve, a cylindricalmember engaging with said second nut, said sleeves and membertelescoping with re lation to each other, a central shaft engagingwithsaid nuts to turn the same but per mitting longitudinal sliding of saidnuts along said shaft, gearing in said base adapted to drive said shaft,operating means for said gearing extending to the exterior of thepedestal, means for preventing said second sleeve from being ithdrawnfrom the pedestal and means for preventing said cylindrical member frombeing withdrawn from said second sleeve, the last mentioned meanscomprising asleeve telescoping with said shaft, the last mentionedsleeve engaging with said shaft and said cylindrical member at the limitof their relative movement to prevent their being moved further apart.

7. A lifting aclr comprising a plurality of telescoping tubularmembers,certain of said tubular members being interiorly threaded, a pluralityof nuts engaging with the said threads upon the interiors of theirrespec: tive members, each of said nuts being adapted to engage anotherof said members and slide it with relation to the member with which thenut is in screw-threaded engagement, a central shaft engaging; with saidnuts to cause turning thereof with said shaft but permitting sliding ofsaid nuts along said shaft and means for turning said shaft andcentrally located telescoping meansfor preventing dissociation of saidmembers and arotatably mounted cap at the upper end of one of saidmembers.

8. A lifting jack comprising a plurality of telescoping tubular members,certain of said tubular members being interierly threaded, a pluralityof nuts engaging with. the said threads upon the interiors of theirrespective members, each of said nuts being adapted to engage another ofsaid members and slide it with relation to the member withwhich the nutis in screw-threaded engagement, a central shaft engaging with said nutsto cause turning thereof with said shaft but permitting sliding of saidnuts along said shaft and means for turning said shaft and centrallylocated telescoping means for preventing dissociation of said membersand a rotatably mounted cap at the upper end of one of said members, thesaid member carrying said cap being rotatable with respect to said meansfor preventing dissociation of said members. 9. A liftmg ack includmg aninteriorly screw threaded tubular member, a nut in engagement with theinternal screw threads of said member, a second member slidably mountedwithin said first member and free for movement at all times towards andaway from said nut, said second member being normally supported at itsinner end by said nut, and means for rotating said nut.

10. A lifting ack comprising an 1nter1or ly screw threaded tubularmember, a nut in engagement with the internal screw threads of saidmember, a second member mounted for free axial movement within andlaterally supported by said first member and supported at its inner endwithin the tubular member by said nut, a central shaft with which saidnut has sliding non-rotative engagement, and means for rotating saidshaft.

11. In a jack havinga frame including a tubular portion, a tubularmember supported within the tubular portion and a second tubular membersupported within the tubular member, a central driving member arrangedwithin the tubular portion, and lifter means actuated directly by thedriving memher and co-operating respectively with the tubular portionand the tubular member to project respectively the tubular member andthe second tubular member.

12. A lifting jack comprising, an upright standard having a verticallyextending tubular portion, a shaft rotatably mounted in said standard, agear rotatable with said shaft, a tubular cylindrical lifting memberhoused in the tubular portion of said stand ard, a second lifting membertelescopically rotatably mounted in said standard, a gear rotatable withsaid shaft, a tubular cyl1ndrical lifting member housed in the casing,

a second lifting member telescopically movable within said firstmentioned lifting mem her and having a head at its upper end adapted toengage a body to be lifted, separate means operable by therotation ofsaid gear for raising said lifting members whereby to project the headon said second lifting member to a raised position equalto sub- Ellistant-ially twice the height of the casing and means formed and arrangedin said casing and co-operating with said tubular lifting member wherebyrelative rotation thereof within the casing is prevented.

14. A lifting jack having a frame including an upright tubular portion,a driving pinion rotatably mounted in the frame, a driven gear mountedfor rotation in the frame, an outer tubular lifting member arrangedwithin the tubular portion of said frame in position to be axiallyextended from and retracted into said tubular frame portion, a secondlifting member arranged within said tubular lifting member in positionto be axially extended from and retracted into said tubular liftingmember, threaded means co-operating between said driven gear and saidouter lifting member for moving the lifting member axially in thetubular frame portion, means formed and arranged in said frame toco-operate with said outer tubular member whereby relative rotationthereof within the frame is prevented and screw threadedmeans'co-operating between said outer tubular lifting member and saidinner lifting member whereby to effect relative axial movements of thelatter with respect to said tubular lifting member.

15. A lifting jack comprising a frame having a tubular portion, adriving pinion rotatably mounted in the frame, an outer tubular liftingmember arranged within the tubular portion of said frame in position tobe -axially extended from and retracted into said tubular frame portion,a second lifting member telescopically arranged within said tubularlifting member, threaded means operable by the rotation of said pinionfor moving the tubular lifting member axially in the tu ular frameportion and said second lifting member axially within said tubularlifting member, means formed and arranged in said frame to co-operatewith said outer tubular lifting member whereby relative rotation thereofwithin the frame is prevented and screw threaded means co-operatingbetween said outer tubular lifting member and said inner lifting memberwhereby to effect relative axial movements of the latter with respect tosaid tubular lifting member.

16. A lifting jack comprising a frame having a tubular portion, adriving pinion rotatably mounted in the frame, an outer tubular liftingmember arranged within the tubular portion of said frame in position tobe axially extended from and retracted into said tubular frame portion,a second lifting member telescopically arranged within said tubularlifting member, means including a gear driven by said pinion and screwthreaded connecting means operable by the rotation of said pinion forraising bothof said lifting members with respect to said frame,co-operating means formed and arranged between the frame and the tubularlifting member for preventing relative rotation therebetween during theaxial movements of the tubular lifting member, said means including aportion arranged in one of said members to engage the other member atvarious points in the length thereof during the axial movement of thetubular lifting member within the frame.

17. A lifting ack comprising a frame having a tubular portion, a drivingpinion rotatably mounted in the frame, an outer tubular lifting memberarranged Within the tubular portion of said frame in position to beaxially extended from and retracted into said tubular frame portion, asecond lifting member telescopically arranged within said tubularlifting member, means including a gear driven by said pinion and screwthreaded means co-operating between said gear and said tubular liftingmember for moving the same axially in the tubular frame portion,co-operating means formed and arranged be tween the frame and thetubular member for preventing relative rotation therebetween during therelative axial movement of the tubular lifting member within the frame,said means including a portion arranged in one of said members to engagethe other member at various points in the length thereof, and screwthreaded means co-operating between said tubular lifting member and saidinner lifting member whereby to effect relative axial movements of thelatter with respect to said tubular lifting member.

18. In a jack, the combination of a housing having a beveled gearmounted in the base thereof, said beveled gear being provided with anupstanding driving member, threaded means operated by the rotation ofsaid driving member to be advanced axially thereof, a work liftingmember having plain exterior surfaces and having its upper end arrangedto contact with the work, and means operable by movement of saidthreaded means for causing the projection of the lifting member, saidmeans including a sleeve slidably splined to the housing and shiftableaxially relative to the threaded means.

19. In a jack, the combination of a housing having a beveled gearmounted in the base thereof, said beveled gear being provided with anupstanding driving member, threaded means operated by the rotation ofsaid driving member to be advanced axially there of, a work liftingmember having its upper end arranged to contact with the work andprovided with plain exterior surfaces, and means operable by movement ofsaid threaded means for causing the projection of the lifting member,said means including a sleeve slidably splined to the housing andshiftable relative to the threaded means, said sleeve and lifting memberhaving smooth and imperforate surfaces and adapted to enclose 3e her,said means including a sleeve slidably portionsof the jack mechanismofthe jack when in extended position.

20. In a jack, thecombination of a housing having a beveled gear mountedin the base thereof, said beveled gear being provided with an upstandingdriving member, threaded means operated by the rotation of said drivingmember to be advanced axially thereof, a work lifting member havingplain exterior surfacesand having its upper end arranged to contact withthe work, and means operable by movement of said threaded means forcausing the projection of the lifting member, said means including asleeve slidably splined to the housing and shiftable axially relative tothe threaded means, and cooperative stops on the sleeve and housing toprevent the sleeve from being extended completely out of the housing.

21. In a jack, the combination of a housing having a beveled gearmounted in the base thereof, said beveled gear being provided with anupstanding driving member, threaded means operated by the rotation ofsaid driving member to be advanced axially thereof, a Work liftingmember having plain exterior surfaces and having its upper end arrangedto contact with the Work, and means operable by movement of saidthreaded means for causing the projection of the lifting memsplined tothe housing and shiftable axially relative to the threaded means,whereby to permit the upper end ofthe load lifting member torbeprojected to more than two times the height of the housing.

22. In a jack, a housing having a tubular upstanding portion, a drivingmechanism including a beveled gear and an upstanding portion mounted insaid housing, a beveled pinion meshing with said gear and rotatablymounted in the sidewalls of said housing to rotate the drivingmechanism, screw threaded means operable upon the rotation of saidupstanding portion to advance axially thereof, an outer sleeve arrangedin the housing for axial projection therefrom upon the movement of saidthreaded means, said sleeve be ing axially slidable with respect to thescrew threaded means and splined to the housing to prevent rotation ofthe sleeve in the housing, a projection member having a load en gagingsaddle at its upper end housed within the sleeve for projectiontherefrom, and threaded means operable upon the rotation of theupstanding portion of the driving mechanism to project the liftingmember from the in the side walls of said housing, a screw threadedelement and threaded means operable upon the rotation of the bevel gearto projectthe screw threaded element, a tubular sleeve having a smoothexterior surface arranged within the tubular portion of the base forprojection therefrom by the projection of the screw-threaded element,said sleeve being capable of axial movement relative to the screwthreaded element and having a splined cennection with the tubularportion of the base to prevent relative rotation thereof with respect tothe base, said screw threaded element being operable to project saidsleeve upon operation of said driving mechanism, a lifting member havinga smooth exterior and provided with a lifting saddle at its upper end,said member being mounted within the sleeve for projection therefrom andthreaded means operable by rotation of the driving mechanism for causingthe projection of the lifting member with respect to the sleeve.

In a lifting ack, the combination with a pedestal, a series oftelescoping members adapted to be extended upwardly from said pedestaland to be collapsed therein, and threaded means movable axially of thepedestal for simultaneously projecting said telescoping members fromsaid pedestal and from each other, saidprojecting means being entirelywithin said pedestal, said telescoping members having plain exteriorswithout exposed operating means therefor whereby the jack, whenextended, presents a plain exterior free from operating screws and thelike, the outermost telescoping member being slidably splined to thepedestal and being axially slidable with respect to parts of theprojecting means. a

25. In a device of the character described, a base member, a memberextensible therefrom, a second member extensible from said first member,and means for simultaneously extending said members comprising arotatable driving member and a floating member mounted to rotate withsaid driving member, and free to move axiallyrelative to andindependently of at least one of said extensible members, said floatingmember having a member slidably mounted thereon and threadingly engagingsaid first extensible member.

26 In a device of the character described, a base member, a memberextensible therefrom, a second member housed within and ex tensible fromsaid first member, and means for simultaneously extending said memberscomprising a rotatable driving member and a floating member mounted torotate with said driving member and slidable axially relative to one ofsaid extensible members and said driving member.

27. In a device of the character described, a base member, a memberextensible therefrom, a second member extensible from said member and amember mounted to rotate with said axially movable member and havingscrew-threaded engagement with said first extensible member, saidaxially movable member being axially movable relative to said lastmember.

28. In a device of thecharacter described, a base member, a memberextensible therefrom, a second member extensible from said first member,and means for sii'nultaneously i extending said members comprising arotatable drivin member and a member having screw threa ed engagementwith said first extensible member and engaging said second extensiblemember to extend the same upon rotation thereof and means for rotatingsaid last member keyed to said driving member and to said last memberand axially movable relative thereto.

29. In a device of the character described, a base member, a memberextensible therefrom, a second member extensible from said firstmember,and means for simultaneously extending said members comprising arotatable driving member and a nut screw-threadedly engaging said firstextensible member and engaging said second extensible member to extendthe same upon rotation of said nut, and means for rotating said nutmounted to rotate therewith and with said driving memher but axiallymovable relative to both said nut and said driving member.

30. In a device of the character described, a base member, a memberextensible therefrom, a second member extensible from said first member,and means for simultaneously extending said members comprising arotatable driving member and an axially movable member mounted to rotatewith said driving member, means for limiting the outward movement ofsaid axially movable member, and a member mounted to rotate with saidaxially movable member and having screwthreaded engagement with saidfirst extensible member, said axially movable member being axiallymovable relative to said last member.

31. In a device of the character described, a base, a member extensibletherefrom, means for holding said member from rotation relative to saidbase, a second member extensible from said first member, and means forsimultaneously extending said members comprising a rotatable drivingmember, means screw-threadedly connecting said driving member with saidfirst extensible member, a floating member mounted to rotate with saiddriving member and free to slide relative to one of said extensiblemembers.

32. In a device of the character described,

a base member, a member extensible from said base, a second memberextensible from said first member, a rotatable driving member, and meanscooperating with said driving member for extending the extensiblemembers upon rotation of the driving member, said means including asleeve member rotatable with and axially movable with re spect to saiddriving member upon rotation thereof, said member carrying a slidablecollar threadingly engaging said first mentioned extensible memberbeneath said second extensible member whereby upon rotation of saidsleeve, said second member may be extended from said first member.

83. In a device of the character described, a. base member, a memberextensible therefrom, means preventing rotation of said member relativeto the base, a second member extensible from said first member, arotatable driving means mounted in the base member, a floating membermounted for rotation with said driving member and axially movable withrespect thereto, means coopcrating with said driving means for movingsaid floating member and said first extensible member axially withrespect to said driving member and means carried by said floating memberand cooperating with said first extensible member for moving the secondextensible member axially with respect to the first extensible member.

In testimony whereof I have signed this specification this 17th day ofSeptember, 1924.

ADOLPI-I PETELER.

